| /* SPDX-License-Identifier: GPL-2.0 */ |
| /* |
| * arch/h8300/asm/include/flat.h -- uClinux flat-format executables |
| */ |
| |
| #ifndef __H8300_FLAT_H__ |
| #define __H8300_FLAT_H__ |
| |
| #include <asm/unaligned.h> |
| |
| /* |
| * on the H8 a couple of the relocations have an instruction in the |
| * top byte. As there can only be 24bits of address space, we just |
| * always preserve that 8bits at the top, when it isn't an instruction |
| * is is 0 (davidm@snapgear.com) |
| */ |
| |
| #define flat_get_relocate_addr(rel) (rel & ~0x00000001) |
| static inline int flat_get_addr_from_rp(u32 __user *rp, u32 relval, u32 flags, |
| u32 *addr, u32 *persistent) |
| { |
| u32 val = get_unaligned((__force u32 *)rp); |
| if (!(flags & FLAT_FLAG_GOTPIC)) |
| val &= 0x00ffffff; |
| *addr = val; |
| return 0; |
| } |
| |
| static inline int flat_put_addr_at_rp(u32 __user *rp, u32 addr, u32 rel) |
| { |
| u32 *p = (__force u32 *)rp; |
| put_unaligned((addr & 0x00ffffff) | (*(char *)p << 24), p); |
| return 0; |
| } |
| |
| #endif /* __H8300_FLAT_H__ */ |
